package demo3;

/**
 * Created with IntelliJ IDEA.
 * Description:
 * User: xiaotutu
 * Date: 2023-11-29
 * Time: 21:59
 */

class Money implements Cloneable{
    public double money;

    @Override
    protected Object clone() throws CloneNotSupportedException {
        return super.clone();
    }
}

class Student implements Cloneable{
    public int age;

    public Money m = new Money();

    public Student(int age) {
        this.age = age;
    }

    @Override
    public String toString() {
        return "Student{" +
                "age=" + age +
                '}';
    }

    @Override
    protected Object clone() throws CloneNotSupportedException {
        Student tmp = (Student) super.clone();
        tmp.m = (Money) this.m.clone();
        return tmp;
        // return super.clone();
    }
}

public class Test {
    public static void main(String[] args) throws CloneNotSupportedException{
        Student student1 = new Student(10);
        student1.m.money = 19.9;
        Student student2 = (Student) student1.clone();
        System.out.println(student1.m.money);
        System.out.println(student2.m.money);
        System.out.println("================");
        student1.m.money = 29.9;
        System.out.println(student1.m.money);
        System.out.println(student2.m.money);
    }


    public static void main1(String[] args) throws CloneNotSupportedException{
        Student student1 = new Student(10);
        student1.m.money = 19.9;
        Student student2 = (Student) student1.clone();
        System.out.println(student1);
        System.out.println(student2);

    }
}
